Dowel pin



FIG. 1 is an isometric view of a dowel pin showing my new design.

FIG. 2 is a side elevation view thereof.

FIG. 3 is an end elevational view thereof.

FIG. 4 is a top plane view thereof.

FIG. 5 is a bottom plane view thereof. 

The ornamental design for a dowel pin, as shown and described. 